The 1.5KE75C-E3/54: Vishay lists the 1.5KE75C-/54 as Obsolete. For an existing design that already carries this TVS on the BOM, the procurement path runs through independent surplus and excess inventory channels — not the factory.
Clamping performance — 1500 W peak pulse, 109 V clamp
At that test condition the clamping voltage is 109 V maximum at 13.9 A peak pulse current. The 60.7 V reverse standoff voltage means the part does not conduct leakage current below that rail level — it sits transparent on a 48 V or 60 V bus until a transient pushes the line above the breakdown threshold. Minimum breakdown voltage is 67.5 V, so the avalanche region starts above that point and clamps the surge to 109 V before the downstream silicon sees damaging overvoltage.
Bidirectional — one device protects both polarities
The TransZorb® series is Vishay's branded TVS line, built for general-purpose surge protection across industrial and telecom power rails.
Through-hole axial package — board-fit notes
Supplied in DO-201AA (DO-27) axial-lead form factor, through-hole mount. The axial package requires a 0.042-inch (1.07 mm) diameter lead hole on the PCB. Lead spacing is non-standard — bend the leads to fit the hole pattern on your existing layout.